On the Structure of the Emulsifiers in Gastric Juice from the Crab, Cancer pagurus L

This is the authors' abstract. We don't add key points for this paper.

The presence of surface active compounds in the gastric juice of some decapod Crustacea was established by Vonk (1).Early work on the structure of the emulsifiers in the gastric juice of the crab, Cancer pagurus L, and of the crayfish, Astacus a.stucus L, indicated that these might be taurine-conjugated bile acids (2).However, later investigations by Vonk (3) have demonstrated several differences between the properties of the emulsifiers and those of bile salts.In a recent communication (4) it was reported that no bile salts could be detected in extracts of crab gastric juice when analyzed by chromatographic and mass spectrometric techniques.However, mat,erial with emulsifying properties was isolated and was shown to yield fatty acids, sarcosine, and taurine upon hydrolysis.The present report describes the purification of the emulsifiers from the gastric juice of the crab, Cancer pagurus L, and presents evidence that these compounds are fatty acylsarcosyltaurines.